RFID PU Leatherette ;Rotating Metal ring on back that transforms device into stand; RFID pocket protects the integrity of your electronic personal data on credit cards etc; Includes removable 3M™ adhesive back for placement on back of smartphone, cell phone or mobile device; Single pocket doubles as a wallet – insert transit cards, credit cards, IDs, and business cards; RFID = Radio Frequency Identification; United States Design Patent No: D874454; Product Size: 2.4" w x 3.62" h x 0.125" d;